Bolts
Flange Bolts & Flange Nuts Supplier
As a supplier of flange bolts & flange nuts, we hold ready stock across common sizes and grades for fast turnaround on repeat and project orders.
As a supplier, we act as your ongoing sourcing partner — whether that means matching an existing specification, filling a recurring order schedule, or sourcing a specific grade or finish you can't get reliably elsewhere.
This role suits buyers who've already settled on a specification and need a dependable source for it over time, rather than re-evaluating quality and pricing on every order — the relationship is built around consistency against an agreed baseline.
Flange bolts and nuts exist to solve a simple problem more cheaply than a washer does: distributing clamping force over a wider bearing surface without adding a separate part to the bill of materials. That's a meaningful saving at automotive and agricultural-machinery production volumes, where every eliminated component also removes a step from the assembly line.
Minimum Order — Container Quantity (Approx.)
A standard 20ft container (~20 tons) holds approximately 500,000-700,000 sets of flange bolts/nuts in common sizes (M8-M10). Exact quantity depends on size and grade and is confirmed at quote time.
You don't need a full container to order. Hurain Engitech & Trade — the group Global Fasteners Exports operates under — regularly ships smaller, partial-container (LCL) orders of just a few pallets or boxes for buyers who don't yet need FCL volume, consolidated with other cargo to keep freight cost reasonable.
Specifications
Standards
DIN 6921 (flange bolts), DIN 6923 (flange nuts).
Types
Serrated (locking) and non-serrated flange bolts/nuts.
Size range
M5 to M20 metric.
Grades
Property class 8.8 and 10.9; stainless A2/A4 on request.
Applications
Automotive assembly
Engine, transmission, and chassis fastening where a wide bearing surface is needed.
Agricultural machinery
Equipment subject to vibration and dynamic loads.
General machinery
Reduced-part-count assemblies replacing bolt + washer combinations.
Materials Available
Steel
Corrosion-resistant
Serration geometry and clamp-load performance are checked against DIN 6921/6923 tolerances before packing.
Our Process
- 1
Spec confirmation
Confirm serrated vs non-serrated, grade, and size.
- 2
Cold forging
Integrated flange forming in a single cold-heading operation.
- 3
Heat treatment
Quench and temper to the specified property class.
- 4
Export packing
Bulk cartons, palletized for container loading.
HS Code & Customs Classification
Most fasteners fall under HS Chapter 73 (articles of iron or steel) or Chapter 74/76 for brass and aluminum items — the exact 8-10 digit subheading depends on the specific product and material. We include the HS code on the commercial invoice; confirm the applicable import duty with your customs broker, since rates vary by country and trade agreement.
Countries We Cover
Frequently Asked Questions
Related Products
Get a quote — Flange Bolts & Flange Nuts Supplier
Send your product list, quantities, and destination port for a quote within 1-2 business days.